Was going to just force it closed again b4 eTest if required..... Have 2 yrs b4 eTest again as it was just done..... so some time to spare..... This post is more of a "make sure you check the function of this part" as I would have never thought to check function of this b4 and since opening it have found a number of bothersome vibrations (at idle) and under load (acceleration) are now gone and were likely as a result of the valve being stuck closed.....Just a warning to all members to check functionalilty of butterfly valve......